The main reason for the difficulty of starting the second-selected wrong-label diesel engine is that under low-temperature weather, the diesel fuel condenses and blocks the oil circuit. In actual use, the cold filter point is more important than the condensation point. All marked diesel oils pass through the cold filter point and then pass through the condensation point as the temperature continues to decrease. Therefore, sometimes the bright temperature has not yet reached 0°C. Living. Applicable areas for different grades of diesel oil are: Oil No. 0 is suitable for areas with a minimum temperature of 4°C or higher; Oil No. -10 is suitable for areas with a minimum temperature of -5°C or higher; Oil No. -20 is suitable for a minimum temperature of -5. -14 °C area; -35 oil is suitable for the lowest temperature of -14 ~ -29 °C area; -50 oil is suitable for the lowest temperature of -29 ~ -44 °C area.
Before the refueling, the diesel used in the diesel engine is not clean and contains impurities, which will cause the fuel system components to wear out, causing the work to deteriorate, and even causing the fuel system precision parts to jam or jam. Therefore, the diesel engine must be purified before adding diesel. There are three commonly used diesel purification methods: First, the purchased diesel oil is allowed to settle for more than 96 hours (the longer the sedimentation time, the more obvious the removal of tiny impurities that cannot be removed by the filter), which requires agricultural machinery operators. Should be done after the first storage; the second is to increase the funnel when the filter plus a layer of silk cloth; third is to take oil from the barrel, the filter plus a layer of silk or typewriter wax paper.
Four anti-precipitate entering the diesel engine In order to prevent precipitation in the precipitated diesel fuel from being added to the diesel engine, and diesel fuel added to the diesel engine, attention should be paid to the following three points: First, do not shake the oil drum when refueling; Second, do not use tilt oil The way to pour oil into the fuel tank is to refuel the diesel engine. The third is that the pumping bucket or hose should be at least 8 centimeters away from the bottom of the tank and must not be directly inserted into the bottom of the tank.
The use of gasoline mixed with gasoline, diesel oil, and diesel fuel in five anti-diesel fuels may cause diesel engine startup difficulties due to high auto ignition temperature of petrol and poor firing performance. Diesel engine exhaust pipes may emit black smoke and show knocking. phenomenon. This not only exacerbates the mechanical wear of the diesel engine, but also results in a large amount of colloid or carbon deposits in the combustion chamber and the exhaust system, which severely damages the lubrication, leading to early damage of the diesel engine and shortening the service life.
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